Distributor



E. LEE

Sept. 9 1 924.

DISTRIBUTOR Filed Novi. 11, 1922 Patented Sept. 9, 1924.

PATENT OFFICE.

ELMER J. LEE, OF BANGOR, PENNSYLVANIA.

DISTRIBUTOR.

Application filed November 11, 1922. Serial No. 600,416.

To all whom t may concern.'

Beit known that l, Emme. J. Lnn, a citizen of the United States, and aresident of Bangor, in the county of Northampton and State ofPennsylvania, have invented certain new and useful Improvements in-Distributors, of which the following is a specification.

My present invention relates generally to distributors, and moreparticularly to a distributor including a shell or casing disposedaround thc timer shaft and provided with an inner annular shoulderforming a trackway and constituted in part by the liber or otherinsulating material within the casing or shell and in part by metalcont-act plates which the fiber or other material insulate from oneanother.

In the ordinary construction the trackway within the shell or casing istraversed by a roller carried by a spring controlled arm which. ispivotally connected to a supporting member in turn connected to thetimer shaft, so that in its rolling action upon the trackway, the rollertrails the supporting armand is on account of this position and supportparticularly susceptible t0 vibratory movement toward and away from thesurface of the traclrway so that the latter frequently becomes quicklyworn in ridges and when so riged obviously precludes smooth rollingContact of the parts.

Itv is the object of my present invention to provide a rotor capable ofquick easy attachment to a timer shaft and of operation within the usualcasing or sliellwit-h a uniformly continuing smooth rolling contact andwhich for this purpose avoids the jointed construction of rotor normallyemployed and substitutes a roller which is yieldable with respect to itssupporting means in a straight line radially with respect to the timershaft and through the center of its support so that there is a directinstead of an indirect pressure of the roller upon the trackway of theshell which avoids the susceptibility to vibrations to which theordinary structure is subject.

A further obj ect is the provision of a simple, cheap and durable rotorwhich may be readily substituted for the ordinary jointed distributorcasing or practical application of my improved rotor,

Figure 2 is a detail sectional view taken through my improved rotor in aplane parallel to its plane of movement,

Figure 3 is a sectional view taken at right angles to Figure 2, and

Figure 4- is a detail perspective view of the several parts of myimproved rotor in detached relation.

Referring now to these figures I have shown in .Figure 1 a conventionaldistributor shell generally indicated at 10 and presenting an inner inga trackway upon .which the Contact roller travels in operation, saidshoulder or traclrway being constituted in part by the librous or otherinsulating material 12 within the shell and in part by the fiat metaldistributi n g insulate from one another.

The shell 10 is indicated in its usual position around the timer shaft14, upon which it is usual to support the rotor of the distributor,carrying the contact roller, by means of a confining nut 15.

In the present instance the contact roller 16 is positioned inengagement with they trackway or shoulder 11 in a radial line withrespect to the timer shaft 14 which passes through the center ofthesupport of the roller connected to the shaft, and the roller 16 is forthis purpose mounted within a rectangular holder 1T having an outerconvexly curved edge provided with a surrounding iiange 18, the sides ofthe holder having op posed apertures 19 to receive a roller bearing pin20 which passes also through the axial opening 21 of the roller.

The holder 17 of the roller has a sliding tit within the outer portionof the roller support or cage generally indicated at 22, also havingconveXly curved outer edges 23, one of which may be provided with anextending tongue 24 adapted to be bent inwardly contacts 13V which thematerial 12 annular shoulder 11 formof material bent angularly toconstitute itsv sides and ends, one of these bent portions having anintegral extension at the inner end of the cage, bent to form' flat sideshoulders 25 anda curved shaft embracing portion 26 between saidy sideshoulders, this extension being preferably provided With a in terminaltongue 27 adapted to be seated in conformable recesses at one side ofthe cage or vsupport andV flush with the latter. The

yshaft embracing portion- 26 has a slot 28 to receive the usual pin 29which when in placel extends Within a recess in the timer shaft 141,an'dwhichl is held from displacement by a cap 30. This cap 80 wheny in'place' embraces' one Vend of the sli'aftembrac- 4ing portion 26 of thesupport or cage, and

in so doing alsocovers .the pin 29, the cap having side Wingsladaptedftoengage opposite sides of the support or cage 22so that' whenin turn engaged by the confining nut 15 upon the tiniershaft projectingthrough an opening 32 of the cap, the latter Will'be immovably held;

The inner edges of the-support or cage 22v at opposite ends oftheshaftembrac-ing por# tion 26 have inturned lugs 33 which bear againstvthetimer shaft 11i as shown mostl clearly invFigure 3, and the shoulders25 formed by the inner'ezitension' of this cage at oppositesides-oftliesliaft embracing portion 26, serve as supports or abutments.for the inner end,V of a coil spring 34 Whose shape is preferably madetoconform to the rectangular shape ofthe cage and theroller holder 17 andWhose outer portion isjadapted to surround kthe said roller holder 1'?and engage the liangeflS ofthe latter, thus placing the roller holder 'pand consequently the roller carried therebyl under tension sufficientto'hold the rollerrmly and evenly in engagement' with its trackway inV aradial line n froml the timer shaft which passes through the center ofthe cage andthe hold"- er 17.

It isobvious from an inspection of the* parts that the objects of theinvention first above stated as Well as the structure ofthe arectangular support having its sides andends formed by the bent portionsof a single .piece ofl material and open at its base, the

meeting ends of said section of material at' one side ofthe supportbeingA recessed and the other side Yof the support having an integral:yextension curved across the topfo'fl the support and forming' with theupper edges of the ends of' the support' a shaft bearing,V saidextension having at' its free end an angular tongue projecting into therecessed portion of the firstmentioned' side of thesupport, a contactroller, arect'angular flanged holder in which the contact roller isjournaledi and which is movable into the support through the lower openend of the latter,r and a spring Within the support engaging said rollerholding toteiision the4 latter' andy the roller. y

2i A rotorv for timer shafts including a rectangular support formed'bythe bent portions of a singlepiece of metal and open at its lowerportion', one side of' the support' having an integral extensionprojecting Y across the. topf ofthev support and forming parallel sideshoulders and a curved meinber between said side. shoulders cooperatingWith' the upper edges of theV ends of the support toform a shaftbearing, a contact roller, a holder in which the roller is journaled-,-

movable'into' the lower open portion ofthe support', and' a" springVWithin. the support bearing against the said shoulders and engaging thesaid roller holder to tension the latter and the contact roller inpractice.

lELMEB, J. Leni

